Thomas goodwin



(No Model.)

T. GOODWIN. MAGIU LANTERN OR OTHER BURNER.

No. 555,947. Patented Mar. 10, 1896.

KR u; i

E 1 IZENTOH Arron/15w WITNESSES ANDREW EGHMMM. PHOTO-LITHQWASHIN BTON,0.6

NlTED STATES PATENT OFFICE.

THOMAS GOODXVIN, OF BILTON, ENGLAND.

MAGIC-LANTERN OR OTHER BURNER.

SPECIFICATION forming part of Letters Iatent No. 555,947, dated March10, 1896..

Application filed April 1'7, 1895. Serial No. 546,101. (No model.)

To all whom it may concern.-

Be it known that I, THOMAS GOODWIN, a subject of the Queen of GreatBritain, and a resident of Bilton, county of WVarwick, England, haveinvented certain new and useful Improvements in Magic-Lantern or otherBurners, of which the followingis a specification, reference being hadto the accompanying drawings, forming a part thereof, in which similarletters of reference indicate corresponding parts in all the figures.

This invention relates to lime-light jets or burners for magic lanterns,and has for its object to provide a simple, cheap, readilyconstructedand perfectly'operating device of this character, a further object beingto provide a barrel for this and other purposes which will beflame-proof.

The invention consists. in. the novel construction and arrangement ofparts hereinafter fully described;

Referring to the drawings, Figure l is a side elevation of a deviceembodying my invention. Fig. 2 is a longitudinal section of the bodyportion thereof. Fig. 3 is a section on the line y y of Fig. 2.

In the practice of my invention I construct a brass tube or barrel A,packed tightly from end to end with strips or pieces of fine copper wirea, and at or near each end of the barrel are formed annularheads orshoulders B, outside of which at each end is a screw-threaded extension0. To one of the screw-threaded ends 0 is secured a hollow conicalattachment D by means of a screw-thread in the interior of its base, andto the apex or outer end thereof is similarly secured a curved dischargeor burner tube E, having at its free end a discharge-nipple F. At theother or front end of the tube or barrel A is secured a head G, having acentral longitudinal bore 9, the outer end of which is enlarged, forminga conical valve -seat H, at the outer end of which is formed a chamberh, the inner side walls of which are screw-threaded to receive ascrew-threaded plug J, 011 which is formed at its inner end a conicalvalve K, adapted to be seated on the valve-seat ll. Mounted upon theplug J is a set-nut 7t, and theouter end of the plug is provided with amilled head or plate L, by which the plug and valve are operated.Communicating with the central bore g in the head G is a diagonally-a1ranged bore M, with which is connected an oxygen-tube m, and diagonallyopposite is a similar bore N, with which communicates a hydrogen-tubeit. As thus constructed the valve K, when closed, eompletelycuts off thesupply of oxygen, but a small groove it, formed in the end of the valveor in the head G, will permit the passage of sufficient hydrogen tomaintain the light, and the thread on the plug J is of such pitch as toopen the valve with half a turn or less.

In front of the head G on the barrel A is mounted a plate or arm 0,secured to a standard O by a screw 0, having a milled head 0, and uponthe central piston of the barrel A is a bracket 1, secured thereto orformed thereon, having two side plates R, but one of which is shown andbetween which is the adjust-able slide or base 0 of the frame or bracketS, which is held in place by a set-screw 'r.

The frame S is provided with forwardly-(H rected arms .9, through whichpasses a screwthreaded rod U, on which is mounted a beveled gear-wheel\V, which gears with a corresponding beveled gear-wheel IV, mounted onthe end of a rod w, which passes through the back of the frame S, andalso through the arm 0, and is provided at its outer end with a milledhead w, by which the'rod and beveled gear-wheels are operated. Thebeveled gear-wheel is suitably arrangedon the rod u, so that said rodmay operate freely therein during the adjustment thereof, and for thispurpose said gearwheel may be threaded internally.

The screw-threaded rodU carries at its upper end the lime stick orpencil V, and independent means may be provided, if desired, tovertically adjust said pencil in the rod U, said rod being hollow orprovided with a cavity in its upper end. These elements of construction,however, form no part'of this invention, and are not shown.

The operation will be readily understood in View of the foregoingdescription, taken in connection with the accompanying drawings. Theframe or bracket S is adjustable on its support P and may be held in anydesired position by the set-screw r, the rod in sliding freely in arm 0to admit of this action. The rod N carrying the lime stick or pencil canbe turned and vertically adjusted by operating the rod to, as will bereadily understood, and it will also be understood that by operating thevalve K by means of the milled head L the supply of oxygen can be cutoff at any time, or regulated to any desired extent, as may also thehydrogen supply, it being understood, of course, that both the oxygenand hydrogen supply pipes m and n are provided with independent valves.(Not shown.) As thus constructed, however dangerousthe gases employedmay be, there is no danger of an explosion, for the reason that no flameor flame-jet can pass through the barrel A, packed longitudinally withthe fine, copper Wire, as described. The supply of gas may be evenlyregulated, and if the hydrogen supply is too great by simply moving thecut-off valve the supply thereof may be readily adjusted to the desiredextent.

My improved burner gives a steady and brilliant light, the packing inthe barrel A being in itself a perfect regulator, and it forms a perfectdissolving apparatus for lantern or similar devices, as the oxygensupply can be cut off instantly, if desired, and immediately turned onagain by simply moving the milled head L, which operates the valve K. Itis evident that any kind of gas may be employed in this burner, and itis not limited to the use of hydrogen and oxygen, as herein described.

Having fully described my invention, its construction and operation, Iclaim, and desire to secure byLetters Pa tent, the following:

1. The combination of a tube or barrel packed with fine copper wire,annular heads secured on each end thereof and provided withscrew-threaded extensions, a conical attachment on one extension, adischarge-tube secured on said attachment, a head G arranged on theother extension, said head having a longitudinal bore enlarged at itsouter end and forming a conical valve-seat, a chamber at the outer endof said valve-seat, a plug secured in said chamber and having a conicalvalve on the inner end thereof to fit into the valve-seat, a set-nutmounted on said plug, and means for supplying hydrogen and oxygen to thetube adapted to be regulated by said valve, substantially as described.

2. The combination of a tube or barrel having a discharge-tube connectedto one end thereof, a threaded extension on the other end, a headarranged on said extension and having a central longitudinal boreenlarged at one end to form a valve-seat and a chamber h, a plug securedin said chamber provided on its inner end with a valve adapted to fitinto said seat, a set-nut to adjust said plug and valve,diagonally-arranged bores in opposite sides of the head one of which isadapted to be closed or opened by the valve, and a groove in the end ofthe valve adapted to permit a supply of hydrogen from the other bore toenter the tube, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 4th day of March, 1895.

'rnoMAs eoonwnv.

Witnesses:

CHARLES HUMPHRIES, ERNEST LocKLEY J ONES.

